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International Civil Aviation Organisation

The Convention on International Civil Aviation (also known as Chicago Convention), was signed on 7 December 1944 by 52 States. Pending ratification of the Convention by 26 States, the Provisional International Civil Aviation Organization (PICAO) was established. It functioned from 6 June 1945 until 4 April 1947. By 5 March 1947 the 26th ratification was received. ICAO came into being on 4 April 1947. In October of the same year, ICAO became a specialized agency of the United Nations linked to Economic and Social Council (ECOSOC).

The Organisation’s Activities

Air Navigation Bureau
The Air Navigation Bureau develops technical studies for the Air Navigation Commission as well as recommendations for Standards and Recommended Practices (SARPs) relating to the safety, regularity and efficiency of international air navigation for the Council.

Air Transport Bureau
The Air Transport Bureau, under the direction of the Air Transport, Unlawful Interference and Joint Support Committees: provides expert assistance required by the Assembly, Council, Air Transport Committee (ATC), Committee on Unlawful Interference (UIC), Committee on Joint Support of Air Navigation Services (JSC) and the specialized conference, divisional, panel and working group meetings that may be convened in the air transport field.

Legal Bureau
The Legal Bureau provides advice and assistance to the Secretary General and through him to the various bodies of the Organisation and to ICAO Member States on constitutional, administrative and procedural matters, on problems of international law, air law, commercial law, labour law and related matters. It includes research and studies in the field of private and public international air law regarding items on the General Work Programme of the Legal Committee and preparation of documentation for the Legal Committee, Diplomatic Conferences, Council, its subordinate bodies and the Assembly. The Legal Bureau is responsible for the depositary functions of ICAO under several treaties, as well as the registration of agreeements or arrangements pursuant to Articles 81 and 83 of the Chicago Convention. The functions of the Legal Bureau also include cooperation and coordination in legal activities with the United Nations and other international organizations.

Technical Co-operation Bureau
ICAO's Technical Co-operation Programme will assist in project implementation with Neutrality, Transparency and Objectivity.

Administration and Services Bureau
The Bureau of Administration and Services is responsible for providing the administrative support required by the Organisation relating to personnel, language and publications, conference and office services, information and communication technology, registry, distribution and sales, Web, library and archives, Assembly and Council Secretariat and quality management.

More Information
Download a copy of the Convention of International Civil Aviation (2006)